Answer:
[tex]-6x^2r-4xr+2r[/tex]
Step-by-step explanation:
[tex]f(x)=-3x^2-2x+1\\\\2[f(r)][/tex]
Plug in the value of f of x into the second expression:
[tex]2[(-3x^2-2x+1)(r)][/tex]
Use the distributive property to distribute the two:
[tex]2(-3x^2)+2(-2x)+2(1)[r]\\\\-6x^2-4x+2[r][/tex]
Distribute each value among r:
[tex]-6x^2r-4xr+2r[/tex]
:Done
A hiker cycles 9 miles in 2/3 of an hour. Make a chart and fill it in to show how far he will bike if he maintains the same pace for 2 hours, 3hours, 3.5 hours.
Answer:
2 hours: 27 miles, 3 hours: 40.5 miles, 3.5 hours: 47.25 miles
Step-by-step explanation:
1.) If a hiker hikes 9 miles in 2/3 of an hour, he will hike 4.5 (Half of 2/3 is 1/3 and half of 9 is 4.5) miles in 1/3 of an hour and 13.5 miles per hour. (1/3 times 3 gives us a whole and 4.5 times 3 is 13.5)
2.) 2 hours: 13.5 * 2 = 27 miles
3.) 3 hours: 13.5 * 3 = 40.5 miles
4.) 3.5 hours: 13.5 * 3.5 = 47.25 miles
9 miles in 2/3 of a hour.
in 1 hour = 9 X 3/2 = 18.2 miles
In 2 hrs = 27 miles
in 3 hrs = 54.6 miles
in 3.5 hrs = 63.7 miles
Pls someone help idk
Answer:
first one c and the second on b
Step-by-step explanation:
Yosef typed a 54 word paragraph in 2/3 minute. What is his typing speed in word per minute
In triangle ABC, the measure of angle A is 95º and the
measure of angle B is 35º. What is the measure of angle C?
A
50°
B
60°
с
140°
D
180°
Answer:
A
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°, thus
∠ A + ∠ B + ∠ C = 180°, so
95° + 35° + ∠ C = 180
130° + ∠ C = 180 ( subtract 130° from both sides )
∠ C = 50° → A
3 hats and 2 scarves costs £12.
5 hats and 4 scarves costs £21.
Find the cost of a hat.
Find the cost of a scarf
Answer:
hat=£(9*9)/3*24)/3/8/9
Scarf=£1.5
Step-by-step explanation:
Let's suppose hats is the variable h
And Let's suppose scarves is the variable s
3h+2s=12
5h+4s=21
so, 3h+2s=12 which is also 2s=12-3h
so, in the equare 5h+4s=21 we can replace the 4s with 2(12-3h) Now the equation is this:
5h+24-6h=21
*Simplified*
Now 5h-6h= -1h
-1h+24=21
+1h +1h
on each side.
now the equation is(remember 1h=h): 24=h+21
I think you can do it now.
Now with the cost of the hats, we can use the first equation: 3h+2s=12
h=3
3*3=9
-9 -9
2s=3
s=1.5
which equation matches the table??
The answer is the third one of y = 6x.
As you substitute x = 1, you get y = 6.
You substitute x = 2, you get y = 12.
Drag the numbers below to put them in order from least to greatest:
-19 -12 -13 9 -4 -1
a car travels 15 miles in 15 minutes how many miles does it travel in 2 hours
Answer:
120 miles in 2 hour
Step-by-step explanation:
One hour has 4 times 15 minutes, so you need to do 15 miles x 4 and that time 2 because its 2 hours.
f(x) = - 3x4 + 7x2 – 2x + 13
Polynomial
Answer:
im not sure what you want me to do
Step-by-step explanation:
Answer:
f(x) =-2x +15
Step-by-step explanation:
you multiply then add positives and negatives
A car dealership decreased the price of a certain car by 13%. The original price was $45,400.
Please I need help with this or I fail math
Answer:
5902
Step-by-step explanation:
Solution: 13% off 45400 is equal to (13 x 13) / 100 = 5902.
3. Angles DEF and EFG are complementary angles. The measure of ZDEF can be
represented by the expression (3x + 15), and the measure of ZEFG can be represented by
the expression (8x - 2).
What is the measure, in degrees, of ZEFG?
A. 250
B. 36
C.45
D. 54
(I’ll give Give Brainliest)
Answer:
C
Step-by-step explanation:
C is only right answer among a to d
Answer:C
Step-by-step explanation:
I’ve done this question before(I pretty sure),I’m sorry for no explanation.Tell me if it’s wrong. :(
lfu29
5m+26 when m=3 i just need a answer but u can solve
Answer:41
Step-by-step explanation:
On Tuesday morning, the temperature is -5º F. The temperature rises 3 4 degree each hour for 6 hours before dropping 1 4 degree each hour for 3 hours. What is the temperature, in degrees Fahrenheit, after 9 hours?
Answer:
The temperature in degrees after 9 hours is -1.25 degrees Fahrenheit
Step-by-step explanation:
Here, we want to know the temperature after 9 hours
Per hour rise each hour is 3/4 degree = 0.75 degree
In 6 hours that will be 0.75 * 6 = 4.5 degrees
Or hour drop is 1/4 = 0.25 degree
In 3 hours, that will be 0.25 * 3 = 0.75 degree
Since it is a drop, we have -0.75 degree
Temperature after 9 hours will be;
-5 + 4.5 -0.75
= -5.75 + 4.5 = -1.25 degrees fahrenheit
Carmen has bought 30 pounds of dog food. She feeds her dog 2/3 pounds for each meal. For how many meals will the food last?
Answer:
24/34=12/17=.7058..................
Step-by-step explanation:
Evaluate 7x+5y+2 at x=1 and y=2 is
JI
Answer:
19
Step-by-step explanation:
7(1) + 5(2) + 2
7 + 10 + 2
19
The answer for the question is 19
Solve for the missing arc measure, angle measure, or variable.
mSN = _____ degrees.
Please help! I’ll give brainliest!!
Answer:
Arc SN = 65
Step-by-step explanation:
The relationship between these three is
RPQ = 1/2 (arc SN + arc QR)
70 = 1/2 (x + 75) Multiply by 2
140 = x + 75 Subtract 75
x = 140 - 75
x = 65
Milligrams (\text{mg})(mg)left parenthesis, start text, m, g, end text, right parenthesis of iron per serving. Then they changed their recipe so they had 1.8\,\text{mg}1.8mg1, point, 8, start text, m, g, end text of iron per serving. What was the percent increase in iron?
Answer:
48.76%
Step-by-step explanation:
Here is the complete question;
A brand of cereal had 1.21milligrams of iron per serving. Then they changed their recipe so they had 1.8mg of iron per serving. What was the percent increase in iron?
Given
Initial amount of iron in cereal per serving = 1.21mg
final amount of iron in cereal per serving =1.8mg
Required
Percentage increase in iron
Increment = 1.8mg - 1.21mg
Increment = 0.59mg
% increase in iron = increment/original amount * 100%
% increase in iron = 0.59/1.21 * 100
% increase in iron = 0.4876 * 100
% increase in iron = 48.76%
Hence the percent increase in iron is 48.76%
An expression is shown. 590.92 - 219.38 What is the value of the expression?
Answer:
371.54
Step-by-step explanation:
590.92 - 219.38 = 371.54
Value of the expression using the subtraction method is 371.54
What is Subtraction?Subtraction is an arithmetic operation that represents the operation of removing objects from a collection
Given expression,
590.92-219.38=371.54
Hence, the value of the expression is 371.54
Learn more about subtraction here
https://brainly.com/question/20671719
#SPJ2
I need to know if its maximum or minimum
Answer:
minimum
Step-by-step explanation:
because there's a dip
1 and 2 plz help me im nice:)
Answer:
1. 13
2. 28
Step-by-step explanation:
hope this helps
Synthetic division
(3x^2 - 4 + x^3) = (x - 1)
Answer:
x³+3x²-4/×-1=x²+4x+4+0/x-1=x²+4x+4
What is the APR on a loan with a monthly periodic rate of 1.75%
In the 48 years between 1842, the average rate of erosion at horseshoe falls was 33 divided by 50 metre per year. In the 22 years between 1905 and 1927 the rate of erosion was 7 divided by 10 meter per year . Approximately how much total erosion occurred during these two time periods
Answer:
47. 08 meters
Step-by-step explanation:
Given that:
In 48 years between 1842 :
Rate of erosion = 33/50 meters per year
Between 1905 - 1927 (22 years)
Rate of erosion = 7/10 meters per year
Approximately how much total erosion occurred during these two time periods ;
Total erosion that occured within 1842:
Rate of erosion * number of years
(33/50)m * 48
0.66 meters * 48
= 31.68 meters
Total erosion that occured between 1905 - 1927:
Rate of erosion * number of years
(7/10)m * 22
0.7 meters * 22
= 15.40 meters
total erosion which occurred during these two time periods ;
31.68 meters + 15.40 meters
= 47.08 meters
Answer:
47. 08 meters
Step-by-step explanation:
Given that:
In 48 years between 1842 :
Rate of erosion = 33/50 meters per year
Between 1905 - 1927 (22 years)
Rate of erosion = 7/10 meters per year
Approximately how much total erosion occurred during these two time periods ;
Total erosion that occured within 1842:
Rate of erosion * number of years
(33/50)m * 48
0.66 meters * 48
= 31.68 meters
Total erosion that occured between 1905 - 1927:
Rate of erosion * number of years
(7/10)m * 22
0.7 meters * 22
= 15.40 meters
total erosion which occurred during these two time periods ;
31.68 meters + 15.40 meters
= 47.08 metersStep-by-step explanation:
18x + 3y = -21 !!!!!!!!!!
18x+3y=-21
slope -intercept form: y=mx+b
move 18x to the other side
sign changes from +18x to -18x
18x-18x+3y=-18x-21
3y=-18x-21
divide both sides by 3 to find slope-intercept form
3y/3=-18x/3-21/3
y=-6x-7
answer: y=-6x-7
Answer:
x= -1/6 y + -7/6
Step-by-step explanation:
URGENT HELP! VIEW PICTURE
Answer:
it 2
Step-by-step explanation:
What is the decimal equivalent of
7/8
?
A. 0.780
B. 0.870
C. 0.875
D. 0.885
How many solutions does 6x= 1 = 2x + 5 + 4x + 6 have?
A. No Solutions
B. Two solutions
C. Infinitely many solutions
D. One Solutions
Answer:
C. Infinitely many solutions
Step-by-step explanation:
Answer:
INFINITE SOLUTIONS
Step-by-step :(examples)
any value of x makes the equation true
true for all= infinite solutions
one solution= x=30
no solution= 7=0
What is the distance between (4,-1) and (0,1)
Answer:
answer is in the image below
Step-by-step explanation:
Use the distance formula to determine the distance between two points.
what is 3 1/5 times 1/6?
Answer:
0.53333333 or 0.54
Step-by-step explanation:
